{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:4WQOWE432NHNSHBKIJWNT2EYCA","short_pith_number":"pith:4WQOWE43","canonical_record":{"source":{"id":"1303.3343","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-03-14T04:58:05Z","cross_cats_sorted":["cond-mat.str-el","cond-mat.supr-con"],"title_canon_sha256":"109d283f187435144010d034b369be6307ba6f1e2709b1a48a46049c51702426","abstract_canon_sha256":"1b670466aab9c40982c2c12a01c30a183282f8bddfb918e9a244acfc08e6b689"},"schema_version":"1.0"},"canonical_sha256":"e5a0eb139bd34ed91c2a426cd9e8981037d897ae46a23250515159b7d1a19e34","source":{"kind":"arxiv","id":"1303.3343","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.3343","created_at":"2026-05-18T03:16:28Z"},{"alias_kind":"arxiv_version","alias_value":"1303.3343v1","created_at":"2026-05-18T03:16:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.3343","created_at":"2026-05-18T03:16:28Z"},{"alias_kind":"pith_short_12","alias_value":"4WQOWE432NHN","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4WQOWE432NHNSHBK","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4WQOWE43","created_at":"2026-05-18T12:27:34Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:4WQOWE432NHNSHBKIJWNT2EYCA","target":"record","payload":{"canonical_record":{"source":{"id":"1303.3343","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-03-14T04:58:05Z","cross_cats_sorted":["cond-mat.str-el","cond-mat.supr-con"],"title_canon_sha256":"109d283f187435144010d034b369be6307ba6f1e2709b1a48a46049c51702426","abstract_canon_sha256":"1b670466aab9c40982c2c12a01c30a183282f8bddfb918e9a244acfc08e6b689"},"schema_version":"1.0"},"canonical_sha256":"e5a0eb139bd34ed91c2a426cd9e8981037d897ae46a23250515159b7d1a19e34","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:16:28.682518Z","signature_b64":"7inIBqZX4MTETP59KNev3c33R1rdU8adx6MM0jd43TAnzMpcI5fRIKKnTeA1j/4O1wZRcAQkHh7PJPUXCbD2Cg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5a0eb139bd34ed91c2a426cd9e8981037d897ae46a23250515159b7d1a19e34","last_reissued_at":"2026-05-18T03:16:28.681841Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:16:28.681841Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.3343","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:16:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vVQFr+GBgcawwbd2wLVKfXQX3/7iMhF3PoC96Gfmcdeqhv4vSfcgexQwv2CXe8NzmEhHYMVluP8euIWKsvslDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:35:10.353554Z"},"content_sha256":"981594b755b6c4b50671c0aa8cea0a94a6326bfe2389cd6c0768feb5c03f13ac","schema_version":"1.0","event_id":"sha256:981594b755b6c4b50671c0aa8cea0a94a6326bfe2389cd6c0768feb5c03f13ac"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:4WQOWE432NHNSHBKIJWNT2EYCA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The Higgs mode in a superfluid of Dirac fermions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el","cond-mat.supr-con"],"primary_cat":"cond-mat.quant-gas","authors_text":"R. Ganesh, Shunji Tsuchiya, Tetsuro Nikuni","submitted_at":"2013-03-14T04:58:05Z","abstract_excerpt":"We study the Higgs amplitude mode in the s-wave superfluid state on the honeycomb lattice inspired by recent cold atom experiments. We consider the attractive Hubbard model and focus on the vicinity of a quantum phase transition between semi-metal and superfluid phases. On either side of the transition, we find collective mode excitations that are stable against decay into quasiparticle-pairs. In the semi-metal phase, the collective modes have \"Cooperon\" and exciton character. These modes smoothly evolve across the quantum phase transition, and become the Anderson-Bogoliubov mode and the Higgs"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.3343","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:16:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3LkHBEB/nLv1z2Xx/r2lWdRMwrbfYCY9RR8jfiJrgApSNgd0Crh/BKqX1umCyVDspNgc8H1AuX0+JoM32KxlDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T14:35:10.353909Z"},"content_sha256":"d3cabffd8ca17abca0d97294a6876a20b96d2c469bf2b0f45cf6547ca59d0e08","schema_version":"1.0","event_id":"sha256:d3cabffd8ca17abca0d97294a6876a20b96d2c469bf2b0f45cf6547ca59d0e08"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4WQOWE432NHNSHBKIJWNT2EYCA/bundle.json","state_url":"https://pith.science/pith/4WQOWE432NHNSHBKIJWNT2EYCA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4WQOWE432NHNSHBKIJWNT2EYCA/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-30T14:35:10Z","links":{"resolver":"https://pith.science/pith/4WQOWE432NHNSHBKIJWNT2EYCA","bundle":"https://pith.science/pith/4WQOWE432NHNSHBKIJWNT2EYCA/bundle.json","state":"https://pith.science/pith/4WQOWE432NHNSHBKIJWNT2EYCA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4WQOWE432NHNSHBKIJWNT2EYCA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4WQOWE432NHNSHBKIJWNT2EYCA","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1b670466aab9c40982c2c12a01c30a183282f8bddfb918e9a244acfc08e6b689","cross_cats_sorted":["cond-mat.str-el","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-03-14T04:58:05Z","title_canon_sha256":"109d283f187435144010d034b369be6307ba6f1e2709b1a48a46049c51702426"},"schema_version":"1.0","source":{"id":"1303.3343","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.3343","created_at":"2026-05-18T03:16:28Z"},{"alias_kind":"arxiv_version","alias_value":"1303.3343v1","created_at":"2026-05-18T03:16:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.3343","created_at":"2026-05-18T03:16:28Z"},{"alias_kind":"pith_short_12","alias_value":"4WQOWE432NHN","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"4WQOWE432NHNSHBK","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"4WQOWE43","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:d3cabffd8ca17abca0d97294a6876a20b96d2c469bf2b0f45cf6547ca59d0e08","target":"graph","created_at":"2026-05-18T03:16:28Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"We study the Higgs amplitude mode in the s-wave superfluid state on the honeycomb lattice inspired by recent cold atom experiments. We consider the attractive Hubbard model and focus on the vicinity of a quantum phase transition between semi-metal and superfluid phases. On either side of the transition, we find collective mode excitations that are stable against decay into quasiparticle-pairs. In the semi-metal phase, the collective modes have \"Cooperon\" and exciton character. These modes smoothly evolve across the quantum phase transition, and become the Anderson-Bogoliubov mode and the Higgs","authors_text":"R. Ganesh, Shunji Tsuchiya, Tetsuro Nikuni","cross_cats":["cond-mat.str-el","cond-mat.supr-con"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-03-14T04:58:05Z","title":"The Higgs mode in a superfluid of Dirac fermions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.3343","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:981594b755b6c4b50671c0aa8cea0a94a6326bfe2389cd6c0768feb5c03f13ac","target":"record","created_at":"2026-05-18T03:16:28Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1b670466aab9c40982c2c12a01c30a183282f8bddfb918e9a244acfc08e6b689","cross_cats_sorted":["cond-mat.str-el","cond-mat.supr-con"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.quant-gas","submitted_at":"2013-03-14T04:58:05Z","title_canon_sha256":"109d283f187435144010d034b369be6307ba6f1e2709b1a48a46049c51702426"},"schema_version":"1.0","source":{"id":"1303.3343","kind":"arxiv","version":1}},"canonical_sha256":"e5a0eb139bd34ed91c2a426cd9e8981037d897ae46a23250515159b7d1a19e34","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5a0eb139bd34ed91c2a426cd9e8981037d897ae46a23250515159b7d1a19e34","first_computed_at":"2026-05-18T03:16:28.681841Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:16:28.681841Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"7inIBqZX4MTETP59KNev3c33R1rdU8adx6MM0jd43TAnzMpcI5fRIKKnTeA1j/4O1wZRcAQkHh7PJPUXCbD2Cg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:16:28.682518Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.3343","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:981594b755b6c4b50671c0aa8cea0a94a6326bfe2389cd6c0768feb5c03f13ac","sha256:d3cabffd8ca17abca0d97294a6876a20b96d2c469bf2b0f45cf6547ca59d0e08"],"state_sha256":"0d88d0516a8c808084a85f6fa71f5e1a9576b55b92c1812e69a64fc59d182f7e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YNrFncIMrWofXZAC+doMCv9Bnx7UTBdk/lCJgeUFGVhzTKsHDFI2s6s9oXSU8pYkzF7Cd0O/Dl66Jyv/kvcaAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T14:35:10.356026Z","bundle_sha256":"01f6b3eb8a7cb8cef6019bb7276f218f24d096e961db785daee3d75e0970c7ae"}}